Before Catalina there was an option to turn off the "beep" sound. ( The sound you have when you double press Fn button ) Now that option is gone in Catalina. And the trick to remove the sound file does not work with Catalina SiP.
Are there any sane way to get rid of that beeping sound before Siri dictation?
Note: This is not Voice Control Dictation, Which was previously known as Enhanced Dictation.